Resources:

MEX - Mexico City International Airport / AICM master thread (airport and transportation - see wikipost)

My Mexico City Airport Layover Tour

Address: "AICM" - Aeropuerto Internacional de la Ciudad de México
(Aeropuerto Internacional Benito Juárez)
Av. Capitán Carlos León S/N
Col Peñón de los Baños
Delegación Venustiano Carranza, DF
CP 15620, México

Phone: (+52 55) 2482-2424 and 2482-2400

Website: http://www.aicm.com.mx/home_en.php (English language version)

Most comprehensive information: Wikipedia (Castilian Spanish)

Venustiano Carranza is one of the 16 boroughs (delegaciones) of the Federal District; it serves Mexico City, and is located 3.1 miles / 5 km east of downtown (getting there takes significantly longer than you would think; traffic can be very congested). The airport is one of the oldest, opening in 1928, and is limited by two runways at high altitude (7,316 ft / 2,230 m above MSL) and can not expand due to encroaching population. Recent attempts to open a new, higher capacity airport were soundly rejected by residents who would have been impacted, so this airport, Latin America's second busiest, will do for now.

FLIGHT INFORMATION: http://www.aicm.com.mx/informacional.../fids/fids.php

CONNECTIONS: Check to see if you need to connect between terminals, and allow plenty of time for that. See MEX Connection Times international / domestic master thread

Interterminal Transportation - Aerotrén / Air Train: The landside elevated Aerotrén APM (Automated People Mover) claims to move only those connecting passengers with boarding passes between Terminal 1 and Terminal 2. It consists of two to four cars, each with 25 passenger (with baggage and hand carry) capacity, per train, which travels at 28 MPH / 45 kph over the 1.9 mi / 3 km range. Time en route is 4:40 (min), dwell time in each terminal is 60 seconds, time between trains is 10:45 (min).

Interterminal Transportation - Landside red shuttle busses operate 05:00 (am) to 01:00 (am), also used during Aerotrén breakdowns, are labeled ""Transportación entre Terminales"; the stops are at entrance No. 6 of Terminal 1 and entrance No. 4 of Terminal 2. They are air conditioned, have luggage spaces and are wheelchair-accessible.
ARRIVING: If you are arriving from an international flight without a connection (you are terminating at MEX), you must have your forms filled out - see Requirements for visiting Mexico as a tourist ("tourist card", visa etc.).

You may have a lengthy walk down the glassed-in arrivals corridor. This corridor has glass door controlled areas to allow people from the departures area cross through the arrivals corridor (like using an air lock), so you could be detained by a boarding aircraft. In April 2014 we were detained nearly fifteen minutes enough route from the 30s gate as a TACA flight boarded and our passage was blocked by glass doors.

Proceed to the corridor end and down one floor to the not-so-well marked exits for "Migración" and proceed to the sometimes lengthy queues to present your passport and documents. Your tourist card will be stamped and you will be given a portion back - turn it in on your departure (if you lose it, expect to pay a fine and have to spend some time with formalities). (When you check in at MEX, the form will be stapled to your boarding pass, and removed at the boarding gate - if somehow you do not have it at counter or gate, you'll have to return landslide and fill out forms and pay a MXN 307.00 fine.)

Once your passport is stamped and your "Tourist Card" / FMM is validated:

If you're connecting to another domestic destination on the airline you arrived on and your baggage is checked through, your baggage will be delivered to you at your final destination.

If otherwise, proceed to the baggage carousels and look for your flight to be displayed. Carts are available. Retrieve your baggage and proceed to "ADUANA", where you will queue up one more time. Normally, as you approach the customs kiosk, you will walk up to what looks like a small traffic light / robot and press the large button; a Green light means you can proceed, a Red light means further Customs formalities and inspection. You normally then put your bags on a conveyor belt for x-ray screening, and then you are landside in the arrivals floor scrum.

BAGGAGE STORAGE

If you recover your baggage and have a layover, there are left luggage / baggage storage / GUARDA EQUIPAJE* at AICM, ~100 MXN per day.

*Goo-ARR-dah ay-kwee-PA-hey

Terminal 1: Internacional area 10 between Gates 7 and 8, Area E-2; 24 hours a day.

Terminal 2: in front of the Domestic Arrivals area, 24 hours a day.

OFFSITE TRANSPORTATION:

By taxi: The authorized taxi stands at the airport have "Transporte Terrestre" kiosks where you can buy a ticket to your destination, and then proceed outside to the taxi line to catch the taxi. DO NOT pay attention to touts or walk across the street to pick up unaffiliated or pirate taxis - kidnapping and assault are not unknown if you choose to do this.

Uber: see https://www.uber.com/cities/mexico-city.

You may wish to read over this informative page about using taxis (and the various kinds of taxis available), with particular emphasis on Mexico City taxis.

By Metro: If you have no luggage, you can use the Metro (Line 5 / Yellow Line, station Terminal Aérea) (serves Terminal 1 only - use interterminal shuttle bus to Terminal 2)and connect to your destination (most will connect to other lines at Pantitlán south, or Oceania north of Terminal Aérea). Tickets (and passes) can be purchased from kiosks, and cost $3.00 pesos per trip (~€ 0.15, or ~US$ 0.24). Hours are 05:00 a 24:00 weekdays, starting 06:00 Saturdays, and 07:00 Sundays and holidays. Website (Castilian Spanish).

Local Bus: The best local bus is the articulated BRT (Bus Rapid Transit) Metrobús Line 4 - the electrically-powered red bus runs in priority roadway lanes from 04:30 (am) to midnight), departures every 20 minutes, takes 30 minutes to downtown historic center / centro histórico, costs $30.00 pesos (about US$2.40 / €1.80) single / one way, has luggage space.

Catch it on the ground floor of Terminal 1 opposite Gates 6 - 7, and Terminal 2 near the taxi rank on the ground floor / arrivals. Get your tickets from automated kiosks with peso coins or credit card; sweep your card past the validator as you board. See this page (English version) for details.

MUSEUMS in the City: Link to listing over all museums in the City.